Vista has become laggy after Turbo Tax

Hi,

After installing Turbo Tax (and doing my taxes) I noticed that Vista, or my system in general has become very slow and unresponsive at times. Programs that used to load in a snap (Firefox, Windows Mail, ect.) now take anywhere from 5 to 20 seconds to load and become unresponsive when they are loading tasks/large web pages. The programs have always snaped out of the "not responding" state they get into after a little while- I have never had to shut one down with task manager. I uninstalled Turbo Tax and all the additional programs that installed with it and I think I have deleted all the other parts of turbo tax that the uninstaller did not get but my machine is still slow. Before you guys tell me to just roll back my system I was stupid and after I did a clean install, I forgot to manually make a restore point and the system restore function didn't turn on automatically. Here is my question- should I try and work this out or should I just bite the bullet and do another clean install? Also a friend of mine has a OEM version of XP he is not using anymore. Should I think about going to XP from Vista Premium with my system? Will an "oem version" from dell work for a clean install? After a year of using Vista I have gotten quite used to it and I am not sure going to XP would really gain me anything- or would it?

Thanks in advance,

Matt

 

In Task Manager, how much free Physical Memory do you have? How is your Pagefile (PF) usage? Which processes are using up most of the memory?

 

Well under the performance tab it shows this:
and, under the processes tab svchost.exe is using the most at 50,732k follwed by firefox at 44,056k. I should mention that I am not a computer whiz by any means- I know just enough to get my self in trouble so any kind of instructions would be great too